From: Christoph Hellwig <hch@lst.de>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [5778] Use MAP_ANON also for FreeBSD (Juergen Lock)
Date: Sun, 23 Nov 2008 13:00:43 +0100 [thread overview]
Message-ID: <20081123120043.GA3323@lst.de> (raw)
In-Reply-To: <20081123100310.GA29843@shareable.org>
On Sun, Nov 23, 2008 at 10:03:10AM +0000, Jamie Lokier wrote:
> Blue Swirl wrote:
> > -#ifdef __OpenBSD__ /* no need (?) for a dummy file on OpenBSD */
> > +/* no need (?) for a dummy file on OpenBSD/FreeBSD */
> > +#if defined(__OpenBSD__) || defined(__FreeBSD__)
> > int map_anon = MAP_ANON;
> > #else
> > int map_anon = 0;
>
> How about, simply:
>
> #ifdef MAP_ANON
>
> (Btw, on some OSes it has the name MAP_ANONYMOUS, so in my own
> portable code I look for both.)
I'm pretty sure there are OSes around that have MAP_ANON/MAP_ANONYMOUS
but don't support it in combination with MAP_SHARED.
next prev parent reply other threads:[~2008-11-23 12:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-22 20:43 [Qemu-devel] [5778] Use MAP_ANON also for FreeBSD (Juergen Lock) Blue Swirl
2008-11-23 9:10 ` Christoph Hellwig
2008-11-24 10:44 ` Christoph Egger
2008-11-24 11:07 ` Christoph Hellwig
2008-11-24 11:54 ` Christoph Egger
2008-11-23 10:03 ` Jamie Lokier
2008-11-23 12:00 ` Christoph Hellwig [this message]
2008-11-23 12:41 ` Jamie Lokier
2008-11-24 9:35 ` Christoph Egger
2008-11-24 17:40 ` M. Warner Losh
2008-11-25 10:19 ` Christoph Egger
2008-11-28 20:02 ` Stuart Brady
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